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HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: calabash digger
Date: August 29, 2017 07:14PM
I air test some relics and coins with my 9 inch coil , how can it be this deep? video: https://youtu.be/_gr7DG9UczM

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Actually, 12" Whisper In The Ground Where It Counts On The AT MAX
Posted by: John-Edmonton
Date: August 29, 2017 10:29PM
Please ...........do your research!

GARRETT AT MAX COIL TO THE SOIL DEPTH TEST (video) I am honored that you are following me around with your Douce. You have some interesting comparisons. The AT MAX was not designed to beat out other metal detectors. Depth alone should never be the number one reason for purchasing a metal detector, just as speed is not the number one reason for purchasing a car. However......for the cost of the MAX vs, the DOUCE, you sure get a lot of bang for your buck, plus it's made in USA and works as good in water as on land. Problems with unit? Repaired quickly in USA. Keep up your fine work. :)

If you had watched the recent video, you would have seen a test of a Merc. dime in the ground, getting whispers of a signal at 12" in true all metal mode, which still gives you a VDI number, (not accurate at great depths) plus the ability use iron audio to rule out iron.

Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: Tom_in_CA
Date: August 30, 2017 06:59AM
thanx for posting the video. I don't imagine you could replicate those depths in actual field hunting. But it was an interesting video to watch none-the-less.

I've had machines which can do air-depth tests like that. Yet the only practical place where I could ever replicate such depths, is in white-dry sand on the beach, or wide open beach sand where I have the liberty to chase insane whispers with no regard to junk vs non-junk. (iron versus conductive, high vs low, etc....)



Edited 1 time(s). Last edit at 08/30/2017 07:02AM by Tom_in_CA.

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Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: Southwind
Date: August 30, 2017 07:38AM
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Depth alone should never be the number one reason for purchasing a metal detector, just as speed is not the number one reason for purchasing a car.

With all due respect John, the answer to both of these can be yes as a valid reason for buying.



The real treasure is in the hunt...

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Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: calabash digger
Date: August 30, 2017 08:22AM
We know depth in ground is less but in ( MY SOIL) it will achieve close to air test depth. I can make it hit a 14 inch large cent here and consitenly will hit 12 inch half, 10 inch merc. To be honest I don't know of a deeper digital machine out there coil size for coil size.. John I thought you would be out finding flour gold with your new AT MAX today ! :pinnochio can anyone say hype? On a serious note the 9 inchs on the air test I said you had in your charts on the dime was correct wasn't it?



Edited 2 time(s). Last edit at 08/30/2017 08:24AM by calabash digger.

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Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: slingshot
Date: August 30, 2017 08:23AM
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Southwind
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Depth alone should never be the number one reason for purchasing a metal detector, just as speed is not the number one reason for purchasing a car.

With all due respect John, the answer to both of these can be yes as a valid reason for buying.
I understand what you're both saying. I was out with my sniper coil at my favorite ball park and a fellow with a more advanced model from my brand came out with his 12" coil and was ready to sell it. I showed him my finds and explained all his obnoxious signals- but I don't think I ever convinced him he just had too much power for where he was. I was kinda hoping he would let it go cheap so I could have that setup for other sites that needed raw depth.:drool:

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Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: calabash digger
Date: August 30, 2017 08:34AM
Just proves you need to know your machine . The great thing about the deus is you can adjust that power with sensitivity as all detectors can be cut back . The deus also has another feature that most detectors don't have a tx power or coil transmit power you can make it as weak or strong as you need . I have cut it back in very thick iron before and works very well with less power one more advantage the deus has over the at series. more is not always better. A really really adjustable machine think about it can be setup for raw depth or the thickest trash that you can hunt...



Edited 1 time(s). Last edit at 08/30/2017 08:36AM by calabash digger.

Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: MI-AuAg
Date: August 30, 2017 08:49AM
"how can it be this deep?" Because it's air!

"Air tests" are a lot like playing the "air guitar", it's a momentary feel good thing, be it with music, or the wonders of our detectors.

Point it in the dirt, throw in some Georgia red clay, some conductive salts in an agricultural field, or a smattering of magnetite. Results always change in the real world, sometimes, very dramatically.

I limit my "air testing" to veryfying a coil/machine is functioning properly, or checking tone/VID's of various conductors. Yet, I still feel very confident in the abilities of my machines/coils.

My favorite "air guitar" tune is Freebird by Lynyrd Skynyrd. Don't hold your breath waiting for a video of me playing the "air guitar". Nor, I assume will you see a group of detectorist's in the local park or beach walking around, pointing and swinging their detector coils skyward. :rolleyes:



Edited 2 time(s). Last edit at 08/30/2017 09:01AM by MI-AuAg.

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Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: Southwind
Date: August 30, 2017 09:10AM
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I understand what you're both saying.

Agreed slingshot. I understand what John's point is. I'm just more pointing out there are exceptions. An example is our city park where all the old coins are extremely deep. I have a buddy I have hunted with for 30+ years and we had pretty much cleaned that 130 year old park with the depth our then detectors were capable of. I bought an E-Trac and it was like a whole new site again. After my buddy watching me pull Indian Heads, V-Nickels, barbers and seated's, he bought him an E-Trac based solely on the depth ability and started pulling the goodies himself. And it was all from depth. Before it was 8-9" at most. The E-Tracs had us pulling keepers at 10"+.

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My favorite "air guitar" tune is Freebird by Lynyrd Skynyrd. Don't hold your breath waiting for a video of me playing the "air guitar".

Ah come'on AuAg I'd like to see that.

I do put a little more weight behind the air tests. I've done a bunch and you can get a good idea of depth ability from an air test. Of course ground will be the major factor, but I have never had a detector go deeper in the ground than in an air test with the rare exception of the halo effect. In my opinion, I guy can get a good idea of possible depth from an air test.



The real treasure is in the hunt...

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Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: calabash digger
Date: August 30, 2017 09:18AM
if I had that kind of soil I would be swinging a pi . ALL vlfs will suffer there some less than others . You never see me claim its that deep in all soils. I agree with the above statement about the air test as to see the potential of a detector.

Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: MI-AuAg
Date: August 30, 2017 09:32AM
I catch enough grief from my daughters when Freebird is playing!

I get where you're coming from Southwind. In terms of a POSSIBLE maximum depth. The true maximum depth is dependent on so many variables, like ambient EMI, ground phase, etc. Those thing vary tremendously from area to area. As Tom in CA pointed out, replicating those depths is rarely possible. In practical terms the "air test" doesn't guarantee anything in real performance in the dirt. Lots of people who see the videos of air test results, can't replicate anywhere near those depths and get pretty growly and negative on their machines, even though that's what ambient conditions allow in THEIR areas.

It's like dangling that carrot out there beyond reach, causes more frustration, than practical expectations.



Edited 1 time(s). Last edit at 08/30/2017 09:37AM by MI-AuAg.

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Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: calabash digger
Date: August 30, 2017 09:43AM
this is your chart correct?




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Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: Southwind
Date: August 30, 2017 10:07AM
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My favorite "air guitar" tune is Freebird by Lynyrd Skynyrd. Don't hold your breath waiting for a video of me playing the "air guitar".

My impersonation of Billy Gibbons of ZZ Top. I didn't have a NuDu cap like Billy's or some cheap sunglasses and suit so I made due with a stocking cap and jacket LOL.

video: https://www.youtube.com/watch?v=EdEyMVhyGu0&list=PLfJZHEpNVSQXeZfxTjC7murPpNwq68pTo&index=10



The real treasure is in the hunt...



Edited 2 time(s). Last edit at 08/30/2017 10:09AM by Southwind.

Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: MI-AuAg
Date: August 30, 2017 10:11AM
Quote
Southwind
Quote

My favorite "air guitar" tune is Freebird by Lynyrd Skynyrd. Don't hold your breath waiting for a video of me playing the "air guitar".

My impersonation of Billy Gibbons of ZZ Top. I didn't have a NuDu cap like Billy's or some cheap sunglasses and suit so I made due with a stocking cap and jacket LOL.

video: https://www.youtube.com/watch?v=EdEyMVhyGu0&list=PLfJZHEpNVSQXeZfxTjC7murPpNwq68pTo&index=10


:clapping:

Re: HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??
Posted by: Architex
Date: August 30, 2017 10:31AM
A test in air, comparing machine to machine, is a fair test of comparative depth expectations in dirt. Depth in dirt will be less of course, but relative strength will be comparable.



One Man's Trash...........is what I usually find.

XP Deus / CTX 3030

Where are the diamond rings?.............They said there'd be diamond rings !.

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